Bobbin changing device



June 16, 1931. H. BUDDECKE BOBBIN CHANGING DEVICEv 2 Sheets-Sheet l Filed April 5, 1929 June 16, 1931. H. BUDDECKE 1,810,754

BOBBINl CHANGING DEVICE Filed April 5, 1929 2 sheets-sheet 2 nfzlorny.

`Patented June 16, 1931 4warren STATES .PATENT- oFFlcEz- Bonnin onirsenvey nnvicn Application mea April 5, 192e, serial Nq; 352,763; and in Germany l It have iiled applications in Germany on A Dec. '31, 1927, and Switzerland on Mar. 31,

their replacement The present invention relatesy to a bobbin changing device vin winding and twisting frames, aswell as in spinning machines, and has for its objectto facilitate vand accelerate the removal of the full bobbinsand cops and by empty ones. Y

The doiiing of full bobbins or cops in winding frames, spinning machines. or twisting frames usually takes place by hand and requires therefore much time. Moreover, the machine has to lbe ystopped while this work is going on, whi h meansa considerable reductionv in output.v Ontheother hand', to shortenrthe stopping time4 of the machine, more labor is required at'1 acorrespondingly I increased cost.

YThe present invention aims at the rapid removal ofthe full bobbins or4 cops and at by the empty their equally rapid replacement grippers for tubes by providing padded strippingthebobbinsin a very Acareful yet ig. 5 is a side view, partly .in section, of a modilied'bobbin changing devlce; s

. ig. `6 is a plan view of the gripper of t Fig. 7 is a side view of. atransport arrangementffor the -spools;- Fig. 8 isfa side view of a modification of the creel'and delivery band; andr Y f Y j,.Fig. 9 isan end section ofthe, device of Fig.- 8

c c Referringto the drawings, and particularfM 1y to Fig. 3, the bobbin changing device is December 31, 1927. g

preferably suspended froma portable crane lo and consists of the gripper cheeks g",g2 extending along the machine and being provided with the hollow rubber bodies 12', p2. The latter can be inflated so as togripthe cops*y or bobb`ns` laterally and to pull them from the spindles when the crane -is vraised and cto convey them into a' collector t where the cops or bobbins are freed from thergrip of the hollow bodies owing to their vdeflation and dropdown. According to the invention, instead of cops, the empty tubes may be re-l moved from a creel nnx corresponding to the spindle gauge of the'ma'chi'ne' in order to l be put onthe spinning spindlesjuniformly n and simultaneously. The amount of air pres-k sure within theho'llow yrubber bodies p, p2,

which may be fluted and covered'with'plush or asimilar fabric to facilitate' the gripping of the bobbins or tubes to be exchanged, determines whether the bobbins Vor tubes are pressed considerably kror gripped softly and slidingly. Y' f Fig. 3 illustrates a spinning machine A having any number of spindles ss". The side walls b and' b2 of the machine are provided 'with twov cylinders z and e2 secured, respectively,l to the slides r and r2.

tions relativeto the machine frameeither by arrangingthe vertical axes c and 02 of the cylinders a and z2 on the-:sameplane with the verticalaXes ofthe spindles yf-.fz/"orby pushing themforward until the cylinderV axes cf and c2 are on a plane with the vertical 'axes aL-u2 where the empty bobbins'fz/ wx ready to be stripped are found. f

VTwo slide bearings e and e2 The beamV g supports further. two gripper cheeks g and g2 extending alongside the machine and being kept at a predetermined, invariable` distance from one another.V by` their carrying levers. TheV cheeks are provided on their insides with the hol-low rubber bodies 7J and 102, one for each cheek, each of'these hollow t bodiescan be separately closed airtight and iS connected. with thear pump by or i2.

the hose n n These y slides may be arrangedintwo different posiare arranged p v at both ends of a cross beam g carrying a mo-. ktor mcoupled with an air pump Z;

The device functions as follows:

Ontop of the spinning machines, winding and twisting frames, the changing device described is suspended from a crane 7c which can travel over any machine in the known manner. In order to remove the full cops on one side of a machine, the device is movedy to the side concerned and the slide bearings e and e2 of the cross beam g are caused to drop on the cylinders e and e2 which are now on the plane of the spindle axes je/-fz/X so that the gripper cheeks g and g2 move very closely past the cops and in such away that the latter are enclosed on both sides by the hollow rubber bodies p and p2 (Fig. l). Then the motor m is started to inflate both hollow bodies p and p2 uniformly and the enclosed cop is gripped more firmly (Figs. 2 and 4), the pressure within the hollow bodies being capable of regulation to suit requirements.

When the-cops' are enclosed by the hollow rubber bodies, 'the cross beam q is raised again bythe crane la and moved forward until it occupies a position above the collector z5. The raising' of the beam has had the effect of stripping all full cops from their spindles s-sx, and if the air is permitted to escape from the hollow rubber bodies, the latter will return -to their initial position as shown in Fig. l, and the-full cops will drop into the collector t.

The next thing to rail with the shanks tubes LELX do is to draw out the nn after the empty havebeen previously putr on the shanks which are equal in number tothe highly convenientl manner.

spindles a1/- and arranged at the same distance from one another as the latter. The rail carrying the shanks n/MX is Supported by ythe bolt 0 s'lidingly arranged on the machine frame.

Thebeam g ders e and z2 with the axes andthe same process described with respect tofthe fullcops is repeated with the difference, however, that nowthe empty tubesv {Uf-ex are gripped and lifted by the beam g, whereuponl the latter with the cylinders e and .a2 vis brought again on-a plane with the spindles 1/-g/2 so'that vthe emptyjtubes vare above the empty spindles. If `the beam is lowered, the tubes will be pressed on the spindles, the airv ispermittedto escape from the hollow rubber bodies, and the `machine is ready for operation after'the cross -beamg is raised again.

The supe-rior features ofthe invention reside in zthe fact that two lpersons are able to remove t'he"bobbins'of a machine of any length within a very short time vand in a The rubber prevents .thematerial from be'ng damaged, and it .becomes unnecessary to pay lparticular attention to the gauge, as Vthe rubber will adaptjitself yto any spindle distance. Moreis then moved over the cylinwhich areV new in adJustment i/ ux of the shanks W,

over, the device according to the invention makes it possible, owing to the softness of the rubber, to place the tubes softly as by hand yet perfectly firmly on the spindles, though it is necessary to employ a crane.

The device described may be modified in many ways, and the invention is, for example, not restricted to lthe use of rubber 'hollow bodies. Figs 5 and 6 show the gripper cheeks equipped with the pads a which may consist of velvet or sponge rubber or of a velvet cover lilled with sponge rubber. The pads may -be-.either smooth or possess the de- 'pression corresponding to the gauge of the spindles. If the cheeks g and g2 .are provided with non-inflatable pads, they must be secured to the carrying levers f and f2 swingingly attached to the beam g and adjustable by hand wheel and spindle or the like, as in- Vdicated in Fig. 5.

In order to employ hollow rubber pads, two vrows of holders 24; and 25 are used, as shown in Figs. 8 a-nd'), one of them (24) being within reach of the upper ends of the bobbins and the other (25), within reach of the lower ends. The holders 24 and 25 have the form of slotted tubes, whereby theslotted sides of the holders face one another, and receive the broadened attachments 26 of the rubber pads 27, as clearly shown in Fig. 8. To the center of each rubber pad a tubing attachment 28 is connected which can be slipped over a nipple-like connection 29 laterally screwed into the air supply pipe 30, as indicated in Fig. 8. VIt is advisable to provide each nipple with a shut-off screw 3l for shutting off leaky pads and preventing excessive loss of air. The device just described is'used in the manner explained in detail with reference to Figs. l and 2. The vpads 27 are inserted between the various bobbins in noninflated condition, i. e., as 'a thin layer, whereupon they are inflated byopening the air supply for the pipe 30so that they rmly grip the bobbins or cops 32 between-them. By lifting-the firmly interconnected rows `of grippers 24 and 25 the pads 27 as well as the bobbins or cons 32 caughtby them are ,caused Yto cooperate in the movement and stripped.

The -collector t may have the form cfa delivery band or transport arrangement guided over two rollers, only one of which is shown, the rotation of which will guide thedofl'ed bobbins to one side of the machine. vFurthermore, vthe Shanks a-nx of the creel for the empty tubes can :be arranged instead of .on a fixed rail on an endless band or cha-in passing over rollsl or sprockets so ,that the empty tubes may be put on the shanks on one side of the machine, an arrangement Vof this type being shown in Fig. 8.. Such .a Vdevice could be used further for putting the bobbins re'- moved from the spindles g/-yxon a row of empty vshanks n-n and, by turning .the driving pulleyy for the endlessfband, replace the row of shanks carrying the full bobbins by the lower row of shanks on which the empty tubes have been previously put so that the Y latter could be caught by the gripper cheeks and fed to the spindles.

I claim n Y 1. A bobbin changing device Jfor spinning `machines, winding and twistingframes, comprising vertically adjustable grippers` Jfor Y seizing the bobbins prior to their removal from the spindles; and rubber pads provided on the said grippers to insure'uniiorm seizing of the bobbins.

2. A bobbin changing device for spinning machines, vwinding and twisting frames, comprising vertically adjustable grippers for v ,seizing the bobbins prior to their removal from the spindles; and inflatable hollow rub-V ber bodies attached to the grippers to insure i 2Q uniform seizing of the bobbins.

3." Abobbin changing device for spinning machines, winding and twisting frames, comprising a plurality of gripper cheeks mounted on the machine and adapted to be raised;

and an inflatable rubber body on each cheek adapted to grip the bobbins when inflated.

4. A bobbin changing device for spinning machines, winding and twisting frames, comprising a plurality of gripper cheeks mounted on the machine and adapted to be raised; and a hollow rubber body' on each cheek adapted to be filled with air and to be regulated as to the pressure of the air, said body l being adapted to grip the bobbins.

5. A bobbin changing device for spinning machines, winding andtwisting frames, comprising vertically adjustable grippers for seizing the bobbins prior to their removal v from` the spindles; and sponge rubber pads 6.0 provided on the said grippers to insure uniform seizing of the bobbins. y

In testimony whereof I have aflixed my signature.

HEINRICH BUDDECKE. 

